RK2. Bristles are fine and shorter than normal. Wings are frequently smaller than normal and deformed in shape, with the edge nicked or cut away, and often have abnormal venation. All wing phenotypes vary in penetrance and expression. Emergence is delayed. Eye colour: eyes are darker than normal and glistening in appearance.
female-sterile. RK3. Bristles short and fine. Eyes dark and glistening. Wings frequently small, deformed in various ways. Eclosion delayed. Male viability, but not fertility, good.